CIRCULATION, BLOOD AND GLANDS :i*9 suprarenal capsules. It divides into two diverging vessels which supply all parts of the diaphragm. The suprarenal arteries are derived from the phrenic and renal arteries, but no twigs coine from the aorta. These peculiarities, likewise the absence of the middle -aer-il a AV -^X*v- .-^/fj A V, X£'X?JA ^'A^^A ^,SS^-'J- * c • V-S H 'JVA \SVA D. FIG. *i.—The abdominal and pelvic arteries m the Chimpanzee. A, cceliac axis ; B, superior mesenteric artery ; C, inferior mesenteric artery; D, left renal artery; E, hypogatatric artery. A.A., aortic arch; C.I.A,, E.I.'A., I.I.A., common, external and internal iliac arteries; r.b., renal branches ; r.c.a., renal cap&ule arteries ; s.r a., suprarenal arteries ; La.a., anastomosis between renal and lumbar arteries; l.o.a., left ovarian artery. Other letters explained in text. artery, were observed in three Chimpanzees. In a female Chimpanzee the left ovarian artery arose from the left renal artery (fig. 44, D.), but in two males both spermatic arteries came from the abdominal aorta.